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Jets traversing a longitudinally boosted, flowing QGP undergo anisotropic modifications due to vacuum-like showers and medium-induced emissions. Softer particles drift with the QGP flow, while harder ones remain concentrated, leading to intra-jet asymmetry. This study explores jet modifications and searches for novel Boost Invariance effects at forward rapidity in PbPb and pp collisions at \(\sqrt{s_{{\textrm{NN}}}} = 5.02\) TeV using CMS data ( \(|\eta | < 2.4\) ). The near-side peak broadens along \(\mathrm {\Delta \eta } \) in central PbPb collisions, particularly for low- \(p_{\textrm{T}}\) particles, indicating parton energy loss. A first-time rapidity-dependent study reveals a significant asymmetry in associated particle yields, which grows at forward rapidity and strengthens from peripheral to central collisions.

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Novel Insights Into Jet Quenching and the Search for Boost Invariance in Forward Rapidity in PbPb Collisions with CMS

  • 会议论文

  • 发表日期：

    2025年

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  • Sayan Chatterjee

摘要

Jets traversing a longitudinally boosted, flowing QGP undergo anisotropic modifications due to vacuum-like showers and medium-induced emissions. Softer particles drift with the QGP flow, while harder ones remain concentrated, leading to intra-jet asymmetry. This study explores jet modifications and searches for novel Boost Invariance effects at forward rapidity in PbPb and pp collisions at \(\sqrt{s_{{\textrm{NN}}}} = 5.02\) TeV using CMS data ( \(|\eta | < 2.4\) ). The near-side peak broadens along \(\mathrm {\Delta \eta } \) in central PbPb collisions, particularly for low- \(p_{\textrm{T}}\) particles, indicating parton energy loss. A first-time rapidity-dependent study reveals a significant asymmetry in associated particle yields, which grows at forward rapidity and strengthens from peripheral to central collisions.